package Demo17;

public class Demo01Phone {
    public static void main(String[] args) {
        Phone phone=new Phone();
        Phone.call();
        Phone.send();
        Phone.send();
        System.out.println("==============");

        NewPhone newPhone=new NewPhone();
        newPhone.call();
        newPhone.send();
        newPhone.show();
        System.out.println("===============");
    }

}
